:root {
  --ds-blue: #0052ff;
  --ds-cyan: #66fcf1;
  --ds-teal: #45a29e;
  --ds-ink: #0b0c10;
  --ds-fog: #f8f9fa;
  --ds-slate: #333f50;
  --blue-deep: #003fc9;
  --text-primary: var(--ds-ink);
  --text-secondary: var(--ds-slate);
  --text-tertiary: #6d7a8d;
  --border: rgba(0, 82, 255, 0.18);
  --border-strong: rgba(0, 82, 255, 0.34);
  --surface: rgba(255, 255, 255, 0.88);
  --surface-solid: #ffffff;
  --surface-soft: rgba(102, 252, 241, 0.14);
  --shadow: 0 18px 40px rgba(11, 12, 16, 0.1), 0 2px 0 rgba(0, 82, 255, 0.06);
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --font-ui: "Inter Tight", system-ui, -apple-system, sans-serif;
  --font-mono: "JetBrains Mono", ui-monospace, monospace;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: var(--font-ui);
  color: var(--text-primary);
  background:
    radial-gradient(circle at 12% 18%, rgba(0, 82, 255, 0.13), transparent 28%),
    radial-gradient(circle at 86% 12%, rgba(102, 252, 241, 0.18), transparent 24%),
    linear-gradient(180deg, #f7fafd 0%, #eef4f9 100%);
}

a {
  color: inherit;
  text-decoration: none;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  gap: 24px;
  padding: 18px clamp(18px, 4vw, 56px);
  background: rgba(248, 249, 250, 0.78);
  border-bottom: 1px solid var(--border);
  backdrop-filter: blur(16px);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-weight: 700;
  letter-spacing: -0.02em;
}

.brand-mark {
  width: 32px;
  height: 32px;
  display: inline-grid;
  place-items: center;
  border-radius: 8px;
  color: white;
  background: linear-gradient(135deg, var(--ds-blue), var(--ds-cyan));
  box-shadow: 0 8px 18px rgba(0, 82, 255, 0.22);
}

.main-nav {
  display: flex;
  justify-content: center;
  gap: 22px;
  color: var(--text-secondary);
  font-size: 0.94rem;
  font-weight: 500;
}

.main-nav a:hover {
  color: var(--ds-blue);
}

.nav-cta,
.primary-btn,
.secondary-btn {
  min-height: 42px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-sm);
  padding: 11px 16px;
  font-weight: 700;
  transition: transform 0.16s ease, box-shadow 0.16s ease, border-color 0.16s ease;
}

.nav-cta,
.primary-btn {
  color: white;
  background: linear-gradient(135deg, var(--ds-blue), #1f66ff);
  box-shadow: 0 6px 18px rgba(0, 82, 255, 0.22);
}

.secondary-btn {
  color: var(--text-primary);
  background: var(--surface);
  border: 1px solid var(--border);
}

.nav-cta:hover,
.primary-btn:hover,
.secondary-btn:hover {
  transform: translateY(-1px);
  box-shadow: var(--shadow);
}

main {
  width: min(1180px, calc(100% - 36px));
  margin: 0 auto;
}

.hero {
  min-height: calc(100vh - 70px);
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(420px, 0.88fr);
  gap: clamp(28px, 5vw, 68px);
  align-items: center;
  padding: 56px 0 48px;
}

.eyebrow {
  margin: 0 0 14px;
  width: fit-content;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: #123e78;
  background: rgba(102, 252, 241, 0.28);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 5px 9px;
}

h1,
h2,
h3,
p {
  margin-top: 0;
}

h1 {
  max-width: 11ch;
  margin-bottom: 20px;
  font-size: clamp(3rem, 8vw, 6.5rem);
  line-height: 0.92;
  letter-spacing: -0.055em;
}

h2 {
  max-width: 15ch;
  margin-bottom: 0;
  font-size: clamp(2rem, 4.8vw, 4rem);
  line-height: 0.98;
  letter-spacing: -0.045em;
}

h3 {
  margin-bottom: 10px;
  font-size: 1.25rem;
  letter-spacing: -0.02em;
}

.hero-lead {
  max-width: 58ch;
  color: var(--text-secondary);
  font-size: 1.14rem;
  line-height: 1.6;
}

.hero-actions {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
  margin-top: 28px;
}

.product-preview {
  overflow: hidden;
  min-height: 520px;
  border: 1px solid var(--border-strong);
  border-radius: var(--radius-lg);
  background: rgba(255, 255, 255, 0.72);
  box-shadow: var(--shadow);
  backdrop-filter: blur(16px);
}

.preview-topbar {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 14px 16px;
  border-bottom: 1px solid var(--border);
}

.preview-topbar span {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--border-strong);
}

.preview-topbar strong {
  margin-left: 10px;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--text-tertiary);
  text-transform: uppercase;
  letter-spacing: 0.06em;
}

.preview-body {
  display: grid;
  grid-template-columns: 128px 1fr;
  min-height: 470px;
}

.preview-sidebar {
  display: grid;
  align-content: start;
  gap: 10px;
  padding: 18px;
  border-right: 1px solid var(--border);
  background: rgba(255, 255, 255, 0.42);
}

.preview-sidebar div,
.assistant-line {
  height: 12px;
  border-radius: 999px;
  background: rgba(0, 82, 255, 0.16);
}

.preview-sidebar div:nth-child(1) { width: 80%; }
.preview-sidebar div:nth-child(2) { width: 62%; }
.preview-sidebar div:nth-child(3) { width: 74%; }

.preview-chat {
  display: grid;
  align-content: center;
  gap: 18px;
  padding: clamp(22px, 4vw, 42px);
}

.assistant-line {
  width: 64%;
  height: 14px;
}

.assistant-line.wide {
  width: 82%;
}

.mission-card {
  padding: 20px;
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  background: var(--surface-solid);
}

.mission-card p {
  margin-bottom: 8px;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--text-tertiary);
  text-transform: uppercase;
  letter-spacing: 0.06em;
}

.mission-card strong {
  display: block;
  margin-bottom: 16px;
  font-size: 1.2rem;
}

.progress {
  height: 8px;
  overflow: hidden;
  border-radius: 999px;
  background: rgba(0, 82, 255, 0.1);
}

.progress span {
  display: block;
  width: 68%;
  height: 100%;
  border-radius: inherit;
  background: linear-gradient(90deg, var(--ds-blue), var(--ds-cyan));
}

.user-bubble {
  justify-self: end;
  max-width: 320px;
  padding: 14px 16px;
  border-radius: 14px 14px 4px 14px;
  color: white;
  background: linear-gradient(135deg, var(--ds-blue), #1f66ff);
}

.metrics {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 12px;
  margin-bottom: 98px;
}

.metrics div,
.feature-grid article,
.plans article,
.security-list,
.cta-section,
.contact-section,
.contact-form {
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  background: var(--surface);
  box-shadow: 0 1px 0 rgba(0, 82, 255, 0.05);
}

.metrics div {
  padding: 20px;
}

.metrics strong {
  display: block;
  font-size: 2rem;
  letter-spacing: -0.04em;
}

.metrics span {
  color: var(--text-secondary);
}

.section,
.split-section,
.cta-section {
  margin-bottom: 108px;
}

.section-heading {
  display: flex;
  align-items: end;
  justify-content: space-between;
  gap: 28px;
  margin-bottom: 28px;
}

.feature-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 14px;
}

.feature-grid article,
.plans article {
  padding: 22px;
}

.feature-grid span {
  display: block;
  margin-bottom: 38px;
  font-family: var(--font-mono);
  color: var(--ds-blue);
}

.feature-grid p,
.plans p,
.split-section p,
.cta-section p,
.contact-section p {
  color: var(--text-secondary);
  line-height: 1.58;
}

.split-section {
  display: grid;
  grid-template-columns: minmax(0, 0.78fr) minmax(360px, 1fr);
  gap: 48px;
  align-items: start;
}

.split-section > div:first-child p:not(.eyebrow) {
  max-width: 62ch;
  font-size: 1.05rem;
}

.security-list {
  display: grid;
  gap: 0;
}

.security-list div {
  display: grid;
  grid-template-columns: 64px 1fr;
  gap: 18px;
  padding: 22px;
  border-bottom: 1px solid var(--border);
}

.security-list div:last-child {
  border-bottom: 0;
}

.security-list strong,
.plan-label {
  font-family: var(--font-mono);
  color: var(--ds-blue);
  font-size: 0.78rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.plans {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 14px;
}

.plans article {
  display: flex;
  flex-direction: column;
}

.plan-price {
  margin-bottom: 12px;
  color: var(--text-primary) !important;
  font-size: 1.75rem;
  font-weight: 800;
  letter-spacing: -0.04em;
}

.plan-price span {
  color: var(--text-tertiary);
  font-size: 0.9rem;
  font-weight: 600;
  letter-spacing: 0;
}

.plan-features {
  display: grid;
  gap: 10px;
  margin: 18px 0 22px;
  padding-left: 18px;
  color: var(--text-secondary);
  line-height: 1.45;
}

.plan-link {
  margin-top: auto;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 40px;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 10px 12px;
  color: var(--ds-blue);
  font-weight: 800;
  background: rgba(255, 255, 255, 0.66);
}

.plan-link:hover {
  border-color: var(--ds-blue);
  background: rgba(102, 252, 241, 0.18);
}

.highlight-plan {
  background:
    radial-gradient(circle at top right, rgba(102, 252, 241, 0.24), transparent 38%),
    var(--surface-solid) !important;
  border-color: rgba(102, 252, 241, 0.7) !important;
  box-shadow: var(--shadow) !important;
}

.cta-section {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 28px;
  padding: clamp(24px, 5vw, 46px);
}

.contact-section {
  display: grid;
  grid-template-columns: minmax(0, 0.9fr) minmax(360px, 1fr);
  gap: clamp(22px, 4vw, 44px);
  align-items: start;
  margin-bottom: 108px;
  padding: clamp(24px, 5vw, 46px);
}

.contact-copy h2 {
  margin-bottom: 18px;
}

.email-link {
  display: inline-flex;
  width: fit-content;
  margin: 4px 0 22px;
  color: var(--ds-blue);
  font-family: var(--font-mono);
  font-weight: 700;
}

.contact-actions {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
}

.contact-form {
  display: grid;
  gap: 14px;
  padding: 20px;
  background: var(--surface-solid);
}

.contact-form label {
  display: grid;
  gap: 7px;
  color: var(--text-secondary);
  font-size: 0.88rem;
  font-weight: 700;
}

.contact-form input,
.contact-form textarea {
  width: 100%;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 12px 13px;
  color: var(--text-primary);
  background: #ffffff;
  font: inherit;
}

.contact-form textarea {
  resize: vertical;
}

.contact-form input:focus,
.contact-form textarea:focus {
  outline: none;
  border-color: var(--ds-blue);
  box-shadow: 0 0 0 3px rgba(0, 82, 255, 0.12);
}

.contact-form button {
  border: 0;
  cursor: pointer;
}

footer {
  width: min(1180px, calc(100% - 36px));
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  gap: 18px;
  padding: 28px 0 38px;
  color: var(--text-tertiary);
  font-family: var(--font-mono);
  font-size: 0.76rem;
  border-top: 1px solid var(--border);
}

@media (max-width: 980px) {
  .site-header {
    grid-template-columns: 1fr auto;
  }

  .main-nav {
    display: none;
  }

  .hero,
  .split-section {
    grid-template-columns: 1fr;
  }

  .hero {
    min-height: auto;
  }

  .product-preview {
    min-height: 440px;
  }

  .feature-grid,
  .metrics,
  .plans {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .contact-section {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 680px) {
  .site-header {
    padding: 14px 18px;
  }

  .nav-cta {
    display: none;
  }

  main,
  footer {
    width: min(100% - 28px, 1180px);
  }

  h1 {
    max-width: 12ch;
  }

  .product-preview {
    min-height: 360px;
  }

  .preview-body {
    grid-template-columns: 1fr;
  }

  .preview-sidebar {
    display: none;
  }

  .metrics,
  .feature-grid,
  .plans {
    grid-template-columns: 1fr;
  }

  .section-heading,
  .cta-section,
  .contact-actions,
  footer {
    flex-direction: column;
    align-items: flex-start;
  }

  .contact-section {
    padding: 22px;
  }
}